Published August 17, 1978
| Version v1
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Liquid-scintillation measuring device with coincidence circuit and circuits for pulse height selection
Description
There are used two photomultipliers, one serving as a coincidence tube for gate control of the transmission of pulses from the other multiplier, the outlet of which is applied for amplitude selection. Additionally there is applied pulse summation where amplifications are balanced and the output pulses are summed up. Moreover, for better discrimination between signal pulses and noise pulses there is applied a control circuit which is designed in such manner that the count range limits are established by the amplitude difference of the pulses from both multipliers (discrimination of 14C or probability discrimination of 14C and T). (DG)
Availability note (English)
MF available from INIS under the Report Number.Abstract (German)
Es werden zwei Fotomultiplier benutzt, wobei einer als Koinzidenzroehre zur Torsteuerung fuer den Durchlass von Impulsen des anderen Multiplier dient, dessen Ausgang bei der Amplitudenauswahl verwendet wird. Zusaetzlich erfolgt eine Impulssummation, bei der die Verstaerkungen abgeglichen und die Ausgangsimpulse summiert werden. Weiterhin wird zur besseren Unterscheidung der Signalimpulse von den Rauschimpulsen eine Steuerschaltung verwendet, welche so ausgebildet ist, dass die Grenzen des Zaehlbereichs noch von der Differenz der Amplituden der Impulse von beiden Multipliern festgelegt (Diskriminierung von C-14 oder Wahrscheinlichkeitsdiskriminierung von C-14 und T) sind. (DG)Files
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Additional details
Additional titles
- Original title (German)
- Fluessigkeits-Szintillations-Messeinrichtung mit einer Koinzidenzschaltung und Schaltungen zur Impulshoehen-Auswahl
Publishing Information
- Imprint Pagination
- 20 p.
- IPC:
- Int. Cl. G01T 1/204.
- IPC
- Int. Cl. G01T 1/204.
- Patent number
- DE patent document 2001909/B/
INIS
- Country of Publication
- Germany
- Country of Input or Organization
- Germany
- INIS RN
- 10474092
- Subject category
- S46: INSTRUMENTATION RELATED TO NUCLEAR SCIENCE AND TECHNOLOGY;
- Descriptors DEI
- BETA DETECTION; CARBON 14; COINCIDENCE METHODS; LIQUID SCINTILLATION DETECTORS; PHOTOMULTIPLIERS; TRITIUM
- Descriptors DEC
- BETA DECAY RADIOISOTOPES; BETA-MINUS DECAY RADIOISOTOPES; CARBON ISOTOPES; CHARGED PARTICLE DETECTION; COUNTING TECHNIQUES; EVEN-EVEN NUCLEI; HYDROGEN ISOTOPES; ISOTOPES; LIGHT NUCLEI; MEASURING INSTRUMENTS; NUCLEI; ODD-EVEN NUCLEI; PHOTOTUBES; RADIATION DETECTION; RADIATION DETECTORS; RADIOISOTOPES; SCINTILLATION COUNTERS; YEARS LIVING RADIOISOTOPES